Australian Lepidoptera. 219 



Sub-family Hydriomeninae. 



With the exception of the genera Gymnoscelis and Chloro- 

 clystis, Avhicli are well represented in Queensland, and of the 

 Indo-Malayan genus Sauris, this sub-family is almost entirely a 

 temperate one, only a small minority of the species ranging into 

 Southern Queensland. In Tasmania, Victoria, and the mountains 

 of New South Wales there are numerous species especially of the 

 large genus Hydriomena. 



In the classification of the sub-family I have followed Mr. 

 Meyrick for the most part, but have made use of a character 

 pointed out by Sir George Hampson — the origin of vein 5 of the 

 hind wings. This has introduced a difficulty, inasmuch as 

 without an examination of the type species and an elaborate 

 research through the older literature, both of which are impos- 

 sible for me, I am not able to determine what generic names, 

 among the many that offer themselves, should be applied to the 

 groups so separated. I have therefore contented myself with 

 dividing the genera Eucymatoge, Hydriomena, and Xanthorhoe 

 into sections, and indicating in the following tabulation what I 

 consider their natural arrangement. It will be coinparatively 

 easy at a later date to substitute generic names for these sections. 



Most of the genera are more or less cosmopolitan. The small 

 genera Scotocyma, Anomocentris, and Diploctena appear to be 

 endemic. 



I am particularly indebted to Mr. G. Lyell for examples of the 

 Victorian species, both by gift and loan. Indeed, without his 

 assistance I could hardly have undertaken this revision. 



j\Ir. Lyell also, together with Mr. J. A. Kershaw, kindly 

 identified for me five species described by Walker in his 

 " Characters of Undescribed Lepidoptera Heterocera," from the 

 types in the Melbourne Museum. 



The aberrant genus Cleptocosmia, Warr., is not included in 

 the following tabulation, but is given separately as an appendix 

 to the sub-family. 



Tabulation of Genera. 



A. — Thorax and coxae not hairy beneath. 

 B. — Posterior tibiae without median spurs. 



